i have 2 oscars and one of them seems to being mad! its trying to jump out of tank, its smashing eveything in the tank and occasinlluy it will keep swimming through my air stones for air. Is this normall?

welcome to the site.
No, it is not normal. banging everything and
hanging in the air stone is a sign of problem.
how big is your tank and how big are your oscars?
kindly describe your tank set up, filtering system,
and how long have you been keeping your tank? is it
cycled?

sorry for a lot of questions, but believe me, there are
a lot more. This the only way this site will gonna help
you.

My tank is a juwel vision 260 aproximattly 250 galls, one of my oscars os about 14 cm and the other the mad one is about 24 cm. I have my tank for about 11 years now and it is cycled. Also i got some pics if you go to the gallery and its under my oscars:woohoo:

a jewel 260 is about 56 gallons not 250 and in itself not quite big enough for one oscar let alone two. now if you have a 6 and 10 inch oscar in that tank and they are being aggressive to each other it could have to do with territory or dominace. the best thing to do is to rehome the aggressor or give them some room to each have their own space ie. bigger tank(something around 100 gallons)